Pressure-dependent foam moulding of poly(meth)acrylimide particles in closed moulds for producing rigid foam cores

The invention relates to a method for producing foam-moulded poly(meth)acrylimide (P(M)I) cores, in particular polymethacrylimide (PMI) cores, which can be used in automobile or aircraft construction, for example. The method is characterized in that a polymer granulate or powder preheated under pres...

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Bibliographische Detailangaben
Hauptverfasser:	Becker, Florian, Richter, Thomas, Bernhard, Kay, Denk, Tim, Liebl, Ina
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The invention relates to a method for producing foam-moulded poly(meth)acrylimide (P(M)I) cores, in particular polymethacrylimide (PMI) cores, which can be used in automobile or aircraft construction, for example. The method is characterized in that a polymer granulate or powder preheated under pressure is filled into a pressing mold while still being under pressure, where same undergoes foaming as the pressure is relieved. The method is characterized in particular in that a preferably double-shelled pressing mold is optionally used for both heating and cooling the granulate and the hard foam core made therefrom.